CN1696629A - Method for monitoring leak from oil gas pipe, and equipment - Google Patents
Method for monitoring leak from oil gas pipe, and equipment Download PDFInfo
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- CN1696629A CN1696629A CN 200510040611 CN200510040611A CN1696629A CN 1696629 A CN1696629 A CN 1696629A CN 200510040611 CN200510040611 CN 200510040611 CN 200510040611 A CN200510040611 A CN 200510040611A CN 1696629 A CN1696629 A CN 1696629A
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Abstract
A leakage detection device of oil -gas piping is composed of a leakage detection tube made of acetate film having selective permeation feature, drying unit with silica gel dryer and carbon filter at one end of tube and monitoring station at another end of tube. Its detection method includes detection natural gas and petroleum vapour by leakage detection tube, using air flow to bring petroleum vapour to monitor station through the tube and using hydrocarbon detector to determine vapour concentration in said station as well as sending out leakage alarm in digital output form if it is necessary.
Description
Technical field
The invention belongs to the oil gas storaging and transport technology, refer in particular to a kind of method for monitoring leak from oil gas pipe and device thereof, it has very high sensitivity, promptly can be used for crude oil, product oil, natural gas line leakage, can be used for the oil-gas gathering and transferring pipeline leakage monitoring again.
Background technology
The pipeline leakage real-time monitoring system all is to leak the abnormality that causes by detection to detect leakage both at home and abroad at present.Wherein flow equilibrium method and pressure differential method are based on the generation that the conservation of matter and energy conservation are judged leakage, can't locate; Stress wave is that the stress wave of propagating along tube wall that causes when utilizing escape of liquid is judged and leaked and the location, and to the tyre covering or to bury the pipe stress ripple signal attenuation on ground very fast, long distance is difficult to detect, and has limited the application of this method; The detector method is that the detection ball is put into pipeline from an end in the pipe, goes downstream, and utilizes ultrasonic technology, leakage field technology etc. to gather tube wall information, takes out from the other end, carries out data analysis and processing.This method cost height, tight to the pipeline conditional request, can not long-time continuous monitor; Negative pressure wave method is quite valued in the world in recent years pipeline leakage detection method, when it utilizes pipeline to leak suddenly, can cause the transient negative pressure ripple of propagating in fluid, and the mistiming that propagates into upstream and downstream by the seizure suction wave locatees.Because these detection methods are subjected to the influence of operation transient, so system sensitivity is not high.Oil-gas gathering and transferring pipeline can't detect with said method and leak because the mobile gas-liquid two-phase that belongs to flows, and very complicated, pressure wave attenuation is very fast.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of method for monitoring leak from oil gas pipe and device thereof are provided, this method is set up the monitoring system that oil and gas pipes is directly monitored leak condition, thereby needn't after the serious gas transmission fault of generation, give the alarm again, compare with other detection methods, its advantage is to detect liquid or the gas that leaks, rather than detects the abnormality that leakage causes.Because this method is not subjected to the influence of operation transient, and very high sensitivity is arranged.
Realize foregoing invention purpose technical scheme:
At first utilize the gas oil pipe leakage detector tube that rock gas and petroleum vapor are detected, make the air-flow band petroleum vapor by detector tube then and enter monitoring station, in monitoring station, utilize the hydro carbons detecting device to determine vapor concentration, and can send leakage alarms with the form of numeral output.
The device of realizing above-mentioned detection method is:
It is made up of three parts:
(1) one has the acetate film gas oil pipe leakage detector tube of selecting Penetration Signature.
(2) connect the drying device that silica gel drier and carbon filter are housed at pipe one end, can guarantee dry and hydrocarbon-containifirst not from detector tube one end inhaled air.
(3) be monitoring station at the pipe other end.Monitoring station is furnished with vacuum equipment and checks the detecting device of hydrocarbonaceous concentration in the oil gas sample.Vacuum equipment can form certain vacuum tightness in detector tube, thereby makes obtained gas sample by the hydrocarbon detecting device.
Described gas oil pipe leakage detector tube by perforate support bushing pipe, acetate fiber pipe, the stainless (steel) wire protective sleeve is sheathed successively forms.
Beneficial effect of the present invention:
The present invention directly monitors the detection system of leak condition for oil and gas pipes, detect the liquid or the gas that leak, rather than the abnormality that causes is leaked in detection, thereby needn't after the serious gas transmission fault of generation, give the alarm again, not be subjected to the influence of operation transient, very high sensitivity is arranged, can monitor the generation of leakage accident in real time, prevent the oil gas loss, safeguard the normal transport of oil and gas pipes, this method has bigger economic benefit and far-reaching social benefit.
Description of drawings
Fig. 1 oil-gas gathering and transportation pipeline leakage monitoring system synoptic diagram
Fig. 2 detector tube structural representation
1. vacuum pump 2. hydrocarbon detecting devices 3. suction inlets 4. detector tubes 5. pipelines
6. open hole liner 7. detector tubes 8. stainless (steel) wire protective sleeves
Embodiment
The inventive method is based on diffusion principle, and as shown in Figure 1, it adopts the detection of a gas oil pipe leakage detector tube realization to rock gas and petroleum vapor.The characteristics of detector tube are that rock gas and petroleum vapor are had very high permeability, but waterproof.If have petroleum vapor around the detector tube, petroleum vapor will diffuse in the detector tube.The air-flow band petroleum vapor and is entered monitoring station by pipe, utilizes the hydro carbons detecting device to determine vapor concentration in monitoring station, and can send leakage alarms with the form of numeral output.
The described device of present embodiment is made up of three parts as shown in Figure 1:
Detector tube (4) is one the acetate film pipe of selecting Penetration Signature, connects suction inlet (3) at detector tube one end, and suction inlet is equipped with the drying device of silica gel drier and carbon filter, can guarantee the dry and hydrocarbon-containifirst not from detector tube one end inhaled air.
At the detector tube other end is monitoring station.Monitoring station is furnished with vacuum pump (1) and checks the detecting device (2) of hydrocarbonaceous concentration in the oil gas sample.Vacuum pump (1) forms certain vacuum tightness in detector tube, thereby makes obtained gas sample by the hydrocarbon detecting device.
The detector tube critical piece is formed by open hole liner (6), detector tube (7), stainless (steel) wire protective sleeve (8) suit successively as shown in Figure 2.
Claims (3)
1. method for monitoring leak from oil gas pipe, it is characterized in that at first utilizing the gas oil pipe leakage detector tube that rock gas and petroleum vapor are detected, make the air-flow band petroleum vapor by detector tube then and enter monitoring station, in monitoring station, utilize the hydro carbons detecting device to determine vapor concentration, and can send leakage alarms with the form of numeral output.
2. realize the device of the described method for monitoring leak from oil gas pipe of claim 1, it is characterized in that comprising three parts: one has the acetate film gas oil pipe leakage detector tube of selecting Penetration Signature, connect the drying device that silica gel drier and carbon filter are housed at pipe one end, at the pipe other end is monitoring station, and monitoring station is furnished with vacuum equipment and checks the detecting device of hydrocarbonaceous concentration in the steam sample.
3. monitoring leak from oil gas pipe device according to claim 2, it is characterized by described gas oil pipe leakage detector tube by perforate support bushing pipe (6), acetate fiber pipe (7), stainless (steel) wire protective sleeve (8) is sheathed successively forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510040611 CN1696629A (en) | 2005-06-20 | 2005-06-20 | Method for monitoring leak from oil gas pipe, and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510040611 CN1696629A (en) | 2005-06-20 | 2005-06-20 | Method for monitoring leak from oil gas pipe, and equipment |
Publications (1)
| Publication Number | Publication Date |
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| CN1696629A true CN1696629A (en) | 2005-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510040611 Pending CN1696629A (en) | 2005-06-20 | 2005-06-20 | Method for monitoring leak from oil gas pipe, and equipment |
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| CN (1) | CN1696629A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267611A (en) * | 2013-04-26 | 2013-08-28 | 常州大学 | Combustible gas detecting tube |
| CN103575476A (en) * | 2013-11-19 | 2014-02-12 | 北京航星网讯技术股份有限公司 | Natural gas leakage detection device and method |
| CN104736987A (en) * | 2012-10-19 | 2015-06-24 | 皮卡罗股份有限公司 | Methods for gas leak detection and localization in populated areas using horizontal analysis |
| CN106033020A (en) * | 2015-03-13 | 2016-10-19 | 中国航空工业集团公司西安飞机设计研究所 | Device and method for detecting air tightness of airplane structure under non-supercharged state |
| CN106054768A (en) * | 2016-06-24 | 2016-10-26 | 西安优耐特容器制造有限公司 | On-line leakage intelligent monitoring system based on multi-parameter monitoring and monitoring method |
| CN113108244A (en) * | 2021-04-30 | 2021-07-13 | 中海石油气电集团有限责任公司 | Method and system for monitoring and positioning leakage of natural gas pipeline containing hydrogen |
| US11808663B2 (en) | 2021-06-09 | 2023-11-07 | Saudi Arabian Oil Company | In situ leakage detection system for buried nonmetallic pipeline |
-
2005
- 2005-06-20 CN CN 200510040611 patent/CN1696629A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104736987A (en) * | 2012-10-19 | 2015-06-24 | 皮卡罗股份有限公司 | Methods for gas leak detection and localization in populated areas using horizontal analysis |
| CN103267611A (en) * | 2013-04-26 | 2013-08-28 | 常州大学 | Combustible gas detecting tube |
| CN103267611B (en) * | 2013-04-26 | 2016-01-27 | 常州大学 | A kind of inflammable gas detector tube |
| CN103575476A (en) * | 2013-11-19 | 2014-02-12 | 北京航星网讯技术股份有限公司 | Natural gas leakage detection device and method |
| CN103575476B (en) * | 2013-11-19 | 2016-05-18 | 北京航星网讯技术股份有限公司 | Natural gas leaking checkout gear and method |
| CN106033020A (en) * | 2015-03-13 | 2016-10-19 | 中国航空工业集团公司西安飞机设计研究所 | Device and method for detecting air tightness of airplane structure under non-supercharged state |
| CN106054768A (en) * | 2016-06-24 | 2016-10-26 | 西安优耐特容器制造有限公司 | On-line leakage intelligent monitoring system based on multi-parameter monitoring and monitoring method |
| CN106054768B (en) * | 2016-06-24 | 2019-03-01 | 西安优耐特容器制造有限公司 | Online leakage intelligent monitor system and monitoring method based on multi-parameter monitoring |
| CN113108244A (en) * | 2021-04-30 | 2021-07-13 | 中海石油气电集团有限责任公司 | Method and system for monitoring and positioning leakage of natural gas pipeline containing hydrogen |
| US11808663B2 (en) | 2021-06-09 | 2023-11-07 | Saudi Arabian Oil Company | In situ leakage detection system for buried nonmetallic pipeline |
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